Science Fair Experiment Preparation

Bought the stuff I need for my science fair project today. It is a really bad time to do a project on plant growth during winter but I didn't have ANY other ideas. I really hope I have enough time to actually complete the experiment and repeat it another 2 times! I don't think that the plant will have enough time to grow big enough. I thought I only had to do the experiment once but noooo. I'm so stressed now. I think I only have around 2 weeks for the plant to grow. I wonder if I could change a few parts of my proposal. Maybe the bean seeds would grow faster than the tomato seeds because it's bigger! Wow. Now I get more science fair ideas. It's a little late brain! Maybe I'll use it for Grade 10. Next year I'm planning on doing how fast different types of milk expire. Whole milk or skim?